US5085708A - Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete - Google Patents
Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete Download PDFInfo
- Publication number
- US5085708A US5085708A US07/645,386 US64538691A US5085708A US 5085708 A US5085708 A US 5085708A US 64538691 A US64538691 A US 64538691A US 5085708 A US5085708 A US 5085708A
- Authority
- US
- United States
- Prior art keywords
- cement
- ultra
- parts
- weight
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00068—Mortar or concrete mixtures with an unusual water/cement ratio
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S106/00—Compositions: coating or plastic
- Y10S106/01—Fly ash
Definitions
- This invention concerns an admixture for ultra-dry-mix concrete.
- Ultra-dry-mix concrete is a concrete with extremely low unit water content of 80 to 100 kg/m 3 , which is dry and crumbly, will not flow from itself and is a concrete on which slump cannot be measured, so that it is called no-slump concrete.
- the RCD (Roller Compacted Dam) method developed in recent years for construction of dam bodies uses ultra-dry-mix concrete which is consolidated by vibratory roller to a given density. The results obtained are shortening of construction time and savings in construction cost.
- cement dispersing agents which are capable of improving workability and reducing unit water content.
- cement dispersing agents include those mainly consisting of lignosulfonates.
- lignosulfonates are manufactured industrially from waste sulfite liquor as the raw material and are commonly known as cement dispersing agents. Normally, one of the sodium, potassium, calcium, ammonium, magnesium and amine salts is used.
- oxycarboxylates specifically, sodium, potassium, calcium, magnesium, ammonium and amine salts of gluconic acid, diketogluconic acid and pentaketogluconic acid may be cited as examples, these products being manufactured by an electrolytic oxidation method, chemical oxidation method or a fermentation method using oxidizing bacteria, from sugars or waste molasses as the raw material.
- the previously-mentioned polycarboxylates are cement dispersing agents with soluble salts of copolymers of alpha and beta unsaturated carboxylic acids and olefins as the effective ingredients, homopolymers of esters of polyethylene glycol monoaryl ethers and maleic acid as monomers and copolymers derived from monomers possible to copolymerize with these, homopolymers of polyalkylene glycol mono(meth)acrylic acid ester or (meth)acrylic acid and copolymers derived from monomers possible to copolymerize with these monomers.
- the nonionic surface active agents (B) used for the ultra-dry-mix concrete admixture of this invention are selected from the group of polyoxyalkylene alkylaryl ethers and polyoxyalkylene alkyl ethers, and these are general purpose nonionic surface-active agents manufactured in chemical industry.
- These nonionic surfactants (B) should have a sufficient permeability for the inorganic hydrophilic substances contained in concrete and it has been shown that surfactants with a hydrophilic-lipophilic balance (HLB-value) of 8-17, preferably 10-14 have the necessary permeability.
- HLB-value hydrophilic-lipophilic balance
- Surfactants with a HLB-value higher than 17 have a low adsorbability, caused by their high molecular weight, and are also not suitable.
- the nonionic surfactants of the above mentioned classes of compounds with a HLB-value from 8 to 17 are polyoxyethylene ethers with a number of ethylene oxide units from 5 to 15. Those with a number of 8 to 10 ethylene oxide units are especially preferred and have a HLB-value of 10-14 and a permeating power lower than 30 seconds, determined by the canvas disk method at 25° C. with an 0.1 percent aqueous solution.
- the dosages of the cement dispersing agents (A) are in the range of 0.15 to 0.80 percent, preferably 0.40-0.65 percent by weight of cement or total weight of cement and fly ash in terms of solids in the case of lignosulfonates and oxycarboxylates, in the case of polycarboxylates the dosage is preferably 0.02 to 0.20 percent by weight. If the dosages of the cement dispersing agents (A) are below these ranges, the water-reducing effects will not be improved, while with dosages above these ranges entrained air content will be excessive and the retardation of hardening so prominent that strength gain will be affected.
- nonionic surface-active agent (B) used in order to obtain favourable results are in case of lignosulfonates 1 to 35 parts by weight of (B), preferably 3 to 20 parts by weight on 100 parts by weight of (A), in case of oxycarboxylates 1 to 100 parts by weight of (B), preferably 5 to 50 parts by weight on 100 parts by weight of (A) and in case of polycarboxylates, 1 to 100 parts by weight, preferably 5 to 50 parts by weight, on 100 parts by weight of (A).
- amounts of 0.01 to 0.05 percent, preferably 0.03 percent by weight of cement or total weight of cement and fly ash in terms of solids will be needed.
- the cement dispersing agent (A) and the nonionic surface-active agent (B) may be individually added at the time of mixing concrete, but the two components (A) and (B) may both be mixed with concrete mixing water and added simultaneously.
- Pozzolith No. 8 main ingredient lignosulfonate, powder, mfd. by Nisso Master Builders Co., Ltd. hereinafter abbreviated as "L"
- Aquarock PM-006 polycarboxylate, powder, mfd. by Nippon Shokubai Kagaku Kogyo Co., Ltd., hereinafter abbreviated as "P"
- the VC value is a value expressing the consistency of an ultra-dry-mix concrete, in units of seconds, a smaller value indicating wetness.
- the air content of concrete after vibratory consolidation was determined by a gravimetric method adapted from the Test Method for Unit Weight of Mortar in Appendix 2 of the said Guideline (Draft), while compressive strengths were tested at ages of 28 days and 91 days in accordance with JIS A 1108, Test Method for Compressive Strength of Concrete, on specimens made in accordance with Method of Making Specimens for Compressive Strength Tests in Appendix 3 of the said Guideline (Draft) and after curing in water of 20°+/-3° C.
- Cement dispersing agents and nonionic surface-active agents were added by dissolving the required quantities beforehand in the concrete mixing water.
- the admixture for ultra-dry-mix concrete of this invention is extremely effective in preventing variation of consistency (hardening) and increasing compressive strength of ultra-dry-mix concrete.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63008387A JPH01188449A (ja) | 1988-01-20 | 1988-01-20 | 超硬練りコンクリート用の混和剤 |
JP63-8387 | 1988-01-20 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07298458 Continuation | 1989-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5085708A true US5085708A (en) | 1992-02-04 |
Family
ID=11691797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/645,386 Expired - Fee Related US5085708A (en) | 1988-01-20 | 1991-01-24 | Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete |
Country Status (3)
Country | Link |
---|---|
US (1) | US5085708A (fr) |
JP (1) | JPH01188449A (fr) |
CN (2) | CN1031049C (fr) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994005606A1 (fr) * | 1992-09-01 | 1994-03-17 | W.R. Grace & Co.-Conn. | Adjuvants reduisant les cavites du ciment hydraulique et procede d'utilisation de ces derniers |
US5494516A (en) * | 1992-07-22 | 1996-02-27 | Sandoz Ltd. | Workable cementitious compositions |
US5654352A (en) * | 1995-05-16 | 1997-08-05 | Maxflow Environmental Corp. | Air-entraining agent and method of producing same |
US5681386A (en) * | 1991-01-08 | 1997-10-28 | Mbt Holding Ag | Method for blending of admixtures in a sprayed concrete mass and agent for application of the method |
EP0813506A1 (fr) * | 1995-03-06 | 1997-12-29 | W.R. Grace & Co.-Conn. | Composition de ciment |
US5703174A (en) * | 1995-06-21 | 1997-12-30 | W. R. Grace & Co.-Conn. | Air controlling superplasticizers |
US6267814B1 (en) | 1998-08-14 | 2001-07-31 | Mbt Holding Ag | Cementitious dry cast mixture |
US6290770B1 (en) | 1998-08-14 | 2001-09-18 | Mbt Holding Ag | Cementitious mixture containing high pozzolan cement replacement and compatabilizing admixtures therefor |
WO2002090286A1 (fr) * | 2001-05-04 | 2002-11-14 | Alpb - Aditivos E Ligantes Para Betões, Lda. | Melanges de plastifiants a base de lignosulfonates |
US6569924B2 (en) | 1999-12-10 | 2003-05-27 | Mbt Holdingag | Solubilized defoamers for cementitious compositions |
US20030127026A1 (en) * | 2001-11-05 | 2003-07-10 | James Edward Anderson | High early-strength cementitious composition |
US20030144385A1 (en) * | 1999-07-09 | 2003-07-31 | Vickers Thomas M. | Oligomeric dispersant |
US20030187101A1 (en) * | 1999-12-10 | 2003-10-02 | Mbt Holding Ag | Solubilized defoamers for cementitious compositions |
US20030187100A1 (en) * | 1999-12-10 | 2003-10-02 | Mbt Holding Ag | Water soluble air controlling agents for cementitious compositions |
US20040211342A1 (en) * | 2003-04-25 | 2004-10-28 | Mbt Holding Ag | Rheology stabilizer for cementitious compositions |
EP2096089A1 (fr) * | 2008-02-26 | 2009-09-02 | Neil Spindler | Additif de béton |
US20090235845A1 (en) * | 2008-03-19 | 2009-09-24 | Hexion Specialty Chemicals, Inc. | Modifier for concrete and cement formulations and methods of preparing the same |
US20110030587A1 (en) * | 2009-08-07 | 2011-02-10 | Lignotech Usa, Inc. | Agglomerated particulate lignosulfonate |
WO2011038426A2 (fr) * | 2009-09-28 | 2011-03-31 | Pieter Gideo Van Der Merwe | Additif pour des compositions à base de ciment et de suppression des poussières |
US8088842B2 (en) | 1999-12-10 | 2012-01-03 | Construction Research & Technology Gmbh | Solubilized defoamers for cementitious compositions |
US8404040B2 (en) | 2009-07-07 | 2013-03-26 | Momentive Specialty Chemicals Inc. | Curing or sealing compositions for concrete and cement formulations and processes for using the same |
JP2024056323A (ja) * | 2022-10-11 | 2024-04-23 | 竹本油脂株式会社 | 水硬性組成物用添加剤、その製造方法及び水硬性組成物の製造方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661670B1 (fr) * | 1990-05-04 | 1993-07-30 | Francais Ciments | Adjuvant pour coulis mortier ou beton de ciment. |
US6310143B1 (en) | 1998-12-16 | 2001-10-30 | Mbt Holding Ag | Derivatized polycarboxylate dispersants |
CN1109004C (zh) * | 2000-04-04 | 2003-05-21 | 北京市建筑材料科学研究院 | 聚羧酸系引气高效混凝土减水剂 |
CN1093095C (zh) * | 2000-11-07 | 2002-10-23 | 复旦大学 | 羧酸类接枝型高效减水剂及其合成方法 |
CN102311548B (zh) * | 2011-06-09 | 2013-03-13 | 江苏博特新材料有限公司 | 梳形木质素减水剂、其制备方法及应用 |
CN105731897A (zh) * | 2016-02-04 | 2016-07-06 | 中国建筑材料科学研究总院 | 一种利用珊瑚礁石制备粗骨料的方法及其混凝土 |
CN105541236B (zh) * | 2016-02-04 | 2018-01-26 | 中国建筑材料科学研究总院 | 一种海水海砂混凝土 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102697A (en) * | 1975-07-09 | 1978-07-25 | Sumitomo Chemical Company, Limited | Fluid plaster composition |
JPS5659661A (en) * | 1979-10-18 | 1981-05-23 | Yoshitomi Pharmaceutical | Concrete admixing agent denaturization prevention |
JPS6042260A (ja) * | 1983-08-10 | 1985-03-06 | 山陽国策パルプ株式会社 | モルタル用混和材 |
JPS60127253A (ja) * | 1983-12-12 | 1985-07-06 | 花王株式会社 | コンクリ−ト混和剤 |
-
1988
- 1988-01-20 JP JP63008387A patent/JPH01188449A/ja active Granted
-
1989
- 1989-01-19 CN CN89101059A patent/CN1031049C/zh not_active Expired - Fee Related
-
1991
- 1991-01-24 US US07/645,386 patent/US5085708A/en not_active Expired - Fee Related
-
1994
- 1994-08-31 CN CN94108661A patent/CN1041711C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4102697A (en) * | 1975-07-09 | 1978-07-25 | Sumitomo Chemical Company, Limited | Fluid plaster composition |
JPS5659661A (en) * | 1979-10-18 | 1981-05-23 | Yoshitomi Pharmaceutical | Concrete admixing agent denaturization prevention |
JPS6042260A (ja) * | 1983-08-10 | 1985-03-06 | 山陽国策パルプ株式会社 | モルタル用混和材 |
JPS60127253A (ja) * | 1983-12-12 | 1985-07-06 | 花王株式会社 | コンクリ−ト混和剤 |
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5681386A (en) * | 1991-01-08 | 1997-10-28 | Mbt Holding Ag | Method for blending of admixtures in a sprayed concrete mass and agent for application of the method |
US5494516A (en) * | 1992-07-22 | 1996-02-27 | Sandoz Ltd. | Workable cementitious compositions |
US5609681A (en) * | 1992-07-22 | 1997-03-11 | Sandoz Ltd. | Workable cementitious compositions |
WO1994005606A1 (fr) * | 1992-09-01 | 1994-03-17 | W.R. Grace & Co.-Conn. | Adjuvants reduisant les cavites du ciment hydraulique et procede d'utilisation de ces derniers |
US5478521A (en) * | 1992-09-01 | 1995-12-26 | W. R. Grace & Co.-Conn. | Method for making bughole-free hardened cement structural units using bughole-reducing cement admixtures |
EP0813506A1 (fr) * | 1995-03-06 | 1997-12-29 | W.R. Grace & Co.-Conn. | Composition de ciment |
EP0813506A4 (fr) * | 1995-03-06 | 1999-01-27 | Grace W R & Co | Composition de ciment |
US5654352A (en) * | 1995-05-16 | 1997-08-05 | Maxflow Environmental Corp. | Air-entraining agent and method of producing same |
US5703174A (en) * | 1995-06-21 | 1997-12-30 | W. R. Grace & Co.-Conn. | Air controlling superplasticizers |
US6290770B1 (en) | 1998-08-14 | 2001-09-18 | Mbt Holding Ag | Cementitious mixture containing high pozzolan cement replacement and compatabilizing admixtures therefor |
US6391106B2 (en) | 1998-08-14 | 2002-05-21 | Mbt Holding Ag | Cementitious mixture containing high pozzolan cement replacement and compatabilizing admixtures therefor |
US6267814B1 (en) | 1998-08-14 | 2001-07-31 | Mbt Holding Ag | Cementitious dry cast mixture |
US20030144385A1 (en) * | 1999-07-09 | 2003-07-31 | Vickers Thomas M. | Oligomeric dispersant |
US6861459B2 (en) | 1999-07-09 | 2005-03-01 | Construction Research & Technology Gmbh | Oligomeric dispersant |
US20030187101A1 (en) * | 1999-12-10 | 2003-10-02 | Mbt Holding Ag | Solubilized defoamers for cementitious compositions |
US8088842B2 (en) | 1999-12-10 | 2012-01-03 | Construction Research & Technology Gmbh | Solubilized defoamers for cementitious compositions |
US20030187100A1 (en) * | 1999-12-10 | 2003-10-02 | Mbt Holding Ag | Water soluble air controlling agents for cementitious compositions |
US6569924B2 (en) | 1999-12-10 | 2003-05-27 | Mbt Holdingag | Solubilized defoamers for cementitious compositions |
US6875801B2 (en) | 1999-12-10 | 2005-04-05 | Construction Research & Technology Gmbh | Solubilized defoamers for cementitious compositions |
US20060030643A1 (en) * | 1999-12-10 | 2006-02-09 | Bury Jeffrey R | Water soluble air controlling agents for cementitious compositions |
WO2002090286A1 (fr) * | 2001-05-04 | 2002-11-14 | Alpb - Aditivos E Ligantes Para Betões, Lda. | Melanges de plastifiants a base de lignosulfonates |
US20030127026A1 (en) * | 2001-11-05 | 2003-07-10 | James Edward Anderson | High early-strength cementitious composition |
US6858074B2 (en) * | 2001-11-05 | 2005-02-22 | Construction Research & Technology Gmbh | High early-strength cementitious composition |
US20040211342A1 (en) * | 2003-04-25 | 2004-10-28 | Mbt Holding Ag | Rheology stabilizer for cementitious compositions |
US7883577B2 (en) | 2003-04-25 | 2011-02-08 | Construction Research And Technology Gmbh | Rheology stabilizer for cementitious compositions |
EP2096089A1 (fr) * | 2008-02-26 | 2009-09-02 | Neil Spindler | Additif de béton |
EP2260010A2 (fr) * | 2008-03-19 | 2010-12-15 | Hexion Specialty Chemicals, Inc. | Adjuvant pour formulations de béton et de ciment et ses procédés de préparation |
US20090235845A1 (en) * | 2008-03-19 | 2009-09-24 | Hexion Specialty Chemicals, Inc. | Modifier for concrete and cement formulations and methods of preparing the same |
US8252106B2 (en) | 2008-03-19 | 2012-08-28 | Momentive Specialty Chemicals Inc. | Modifier for concrete and cement formulations and methods of preparing the same |
EP2260010A4 (fr) * | 2008-03-19 | 2012-07-11 | Momentive Specialty Chemicals Res Belgium | Adjuvant pour formulations de béton et de ciment et ses procédés de préparation |
US8404040B2 (en) | 2009-07-07 | 2013-03-26 | Momentive Specialty Chemicals Inc. | Curing or sealing compositions for concrete and cement formulations and processes for using the same |
US20110030587A1 (en) * | 2009-08-07 | 2011-02-10 | Lignotech Usa, Inc. | Agglomerated particulate lignosulfonate |
WO2011015950A3 (fr) * | 2009-08-07 | 2011-05-05 | Borregaard Industries Limited | Lignosulfonate particulaire aggloméré |
US8277557B2 (en) | 2009-08-07 | 2012-10-02 | Borregaard Industries Limited | Agglomerated particulate lignosulfonate |
US8946396B2 (en) | 2009-08-07 | 2015-02-03 | Borregaard Industries Limited | Agglomerated particulate lignosulfonate |
WO2011038426A3 (fr) * | 2009-09-28 | 2011-06-09 | Pieter Gideo Van Der Merwe | Additif pour des compositions à base de ciment et de suppression des poussières |
WO2011038426A2 (fr) * | 2009-09-28 | 2011-03-31 | Pieter Gideo Van Der Merwe | Additif pour des compositions à base de ciment et de suppression des poussières |
JP2024056323A (ja) * | 2022-10-11 | 2024-04-23 | 竹本油脂株式会社 | 水硬性組成物用添加剤、その製造方法及び水硬性組成物の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPH0553740B2 (fr) | 1993-08-10 |
CN1110261A (zh) | 1995-10-18 |
CN1035485A (zh) | 1989-09-13 |
CN1041711C (zh) | 1999-01-20 |
CN1031049C (zh) | 1996-02-21 |
JPH01188449A (ja) | 1989-07-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5085708A (en) | Lignosulfonates, oxycarboxylates, polycarboxylates, and polyoxalklene, alkylaryl and alkyl ethers admixtures for ultra-dry mix concrete | |
US4997484A (en) | Hydraulic cement and composition employing the same | |
US4210457A (en) | Portland cement-fly ash-aggregate concretes | |
US5716448A (en) | Hydraulic composite | |
US6277191B1 (en) | Air entrainment with polyoxyalkylene copolymers for concrete treated with oxyalkylene SRA | |
JP4281975B2 (ja) | セメント組成物 | |
US4946506A (en) | Corrosion inhibiting hydraulic cement additives and compositions containing same | |
EP0402812A2 (fr) | Méthode de commande de l'entraînement de l'air dans des compositions de béton | |
JPH0152344B2 (fr) | ||
JP4796730B2 (ja) | セメント及びコンクリート構造物上の表面ダストの存在を最少とするための混和物 | |
US5792252A (en) | Cement compositions and admixtures thereof | |
JPH1179822A (ja) | 水硬性組成物及びそれを使用したモルタル又はコンク リート | |
US4441929A (en) | Superplasticizers for cementitious compositions | |
JP3584564B2 (ja) | 高流動性セメント組成物 | |
JPH0680456A (ja) | 流動性水硬性組成物 | |
JPH09295843A (ja) | 高性能減水剤組成物及びそれを使用したセメント組成 物 | |
JPS5826061A (ja) | セメント混練物の作業性低下防止方法 | |
US20010029872A1 (en) | Admixtures for mineral binders based on hydrogenated disaccharide, admixture-containing mineral binders, and a process for the preparation thereof | |
JP2567322B2 (ja) | 現場打ち用の高充填性フレッシュコンクリート | |
GB1588130A (en) | Hydraulic cementitious compositions | |
JPH11116306A (ja) | セメント混和材及びそれを含有したセメント組成物 | |
JP4679707B2 (ja) | 高強度セメント混和材及びそれを用いたセメント組成物 | |
JPH01242445A (ja) | 水硬性セメント組成物 | |
US2485102A (en) | Cement composition and indurating mixture therefor | |
JPS5829265B2 (ja) | コウキヨウドコンクリ−トセイヒン ノ セイゾウホウホウ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
AS | Assignment |
Owner name: MBT HOLDLING AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NOVARTIS AG SUCCESSOR IN TITLE TO SANDOZ LTD.;REEL/FRAME:008470/0651 Effective date: 19970416 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20000204 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |